Robust beamforming using beam-to-reference weighting diagonal loading and Bayesian framework

Chao Wu; Yanmeng Guo; Yueyue Na; Xiaofei Wang; Qiang Fu; Yonghong Yan

Robust beamforming using beam-to-reference weighting diagonal loading and Bayesian framework

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Author(s): Chao Wu ¹ ; Yanmeng Guo ¹ ; Yueyue Na ¹ ; Xiaofei Wang ¹ ; Qiang Fu ¹ ; Yonghong Yan ¹
- Affiliations: 1: The Key Laboratory of Speech Acoustics and Content Understanding, Chinese Academy of Sciences, Beijing, People's Republic of China
Source: Volume 51, Issue 22, 22 October 2015, p. 1772 – 1774
DOI: 10.1049/el.2015.2859 , Print ISSN 0013-5194, Online ISSN 1350-911X

Received 12/08/2015, Published 08/10/2015

A novel robust diagonal loading (DL) algorithm against steering vector mismatch is proposed. The beam-to-reference ratio is estimated first and then used as a weighting factor for variable DL. The Bayesian framework is applied eventually to obtain the weight vector. In contrast to traditional methods, the proposed method achieves good performance without using any optimisation toolboxes or matrix eigendecomposition operations.

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Robust beamforming using beam-to-reference weighting diagonal loading and Bayesian framework

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